Out-of-bounds Read Affecting kernel package, versions *
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Test your applications- Snyk ID SNYK-CENTOS7-KERNEL-6303003
- published 28 Feb 2024
- disclosed 27 Feb 2024
Introduced: 27 Feb 2024
CVE-2021-46952 Open this link in a new tabHow to fix?
There is no fixed version for Centos:7 kernel.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel package and not the kernel package as distributed by Centos.
See How to fix? for Centos:7 relevant fixed versions and status.
In the Linux kernel, the following vulnerability has been resolved:
NFS: fs_context: validate UDP retrans to prevent shift out-of-bounds
Fix shift out-of-bounds in xprt_calc_majortimeo(). This is caused by a garbage timeout (retrans) mount option being passed to nfs mount, in this case from syzkaller.
If the protocol is XPRT_TRANSPORT_UDP, then 'retrans' is a shift value for a 64-bit long integer, so 'retrans' cannot be >= 64. If it is >= 64, fail the mount and return an error.
References
- https://access.redhat.com/security/cve/CVE-2021-46952
- https://git.kernel.org/stable/c/2f3380121d49e829fb73ba86240c181bc32ad897
- https://git.kernel.org/stable/c/3d0163821c035040a46d816a42c0780f0f0a30a8
- https://git.kernel.org/stable/c/96fa26b74cdcf9f5c98996bf36bec9fb5b19ffe2
- https://git.kernel.org/stable/c/c09f11ef35955785f92369e25819bf0629df2e59